A Short Note on the Occurrence of a Leiicocytozoon Infection. 37 
Contrary to what has been observed in Leucocytozoon infection of 
other birds, in some species no spindle-shaped formation of the host-cell 
has so far been observed in stained blood-smears of infected ostriches. 
Occurrence amongst Ostriches and Age of Birds Affected. 
For the purpose of ascertaining to what extent the infection occurs 
amongst ostriches, a number of blood-smears from chicks and adult birds 
were collected from various farms, with the result as shown in the 
following table : — 
B.H. 
31/1/12 
P. 
12/2/12 
31/1/12 
21/1/12 
T. 
18/1/12 ■ 
B.H. 
17/11/11- 
Number of Smears Examined 
and Ages of Birds. 
12 X 7 year old ostriches 
6x3 ,, 
12 X 18 months old ostriches 
12x2^ 
12x6 weeks ,, 
11 X 7 year old ostriches 
17x2 
7x2 months old ostriches 
4x6 year old ostriches 
6 X 15 months old ostriches 
6x7 
15x2 
2x6 weeks , , 
4x2 
8x1 month old chicks 
1x5 
4 aged ostriches 
4 X 18 months old ostriches 
1x5 
5x4 
lx2J 
2x3 
6x2 
7x2 days old ostriches 
1x3 months old ostriches 
2x7 weeks old chicks 
4x6 ,, 
1x5 ,, 
1x4 ,, 
9 leucocytozoon infection 
11 
1 leucocytozoon infection 
4 
2 ■ 
Negative 
Negative 
4 leucocytozoon 
iive 
3 leucocytozoon infection 
Negative 
Negative 
Leucocytozoon infection 
Mortality amongst 
chicks on this 
farm heavy this 
year and pre- 
vious years. 
Little or no mor- 
tality this year 
amongst chicks 
on this farm. 
Losses have oc- 
curred this year 
and also in pre- 
vious years. 
Mortality heavy on 
this farm this 
year. 
Mortality heavy on 
this farm during 
this year and 
previous years. 
Mortality heavy on 
this farm during 
the year and 
some previous 
years. 
